The CT scan was invented in 1972 by British engineer Godfrey Hounsfield of EMI Laboratories, England and South Africa-born physicist Allan Cormack of Tufts University, Massachusetts. Hounsfield and Cormack were awarded the Nobel Peace Prize for their contributions to medical science.

HIV and AIDS can be easily confused, and often are among those that do not know enough about the subject. These two are the unique diagnosis but are related at a certain level. AIDS is a condition, which is also known as stage 3 HIV, while HIV is a virus.

It is well-known that exposure to radiation can cause cancer in the human body, over and above many other problems. This raises many questions in the mind of patients regarding the safety of x ray radiation and other scanning methodology regularly used in the practice of medicine.